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gravity never really "takes over". no one wins, the fundamental law of Conservation of Energy says that all of the energy in a system remains in that system, it is simply transformed.
If we shot the bullet straight up in the air,(remember we are ignoring the effects of friction, which eliminates airdrag) when it comes back down, at the height at which it was shot, it will have EXACTLY the same velocity as when it was fired.
There are two forms of energy in a frictionless problem such as this. Potential and Kinetic. If we considered friction, we would have to consider the energy lost in the form of Heat. Kinetic energy is transformed in to Potential as the bullet rises and gravity causes the bullet to accelerate 9.8m/s/s in the opposite direction. Once all of the energy becomes Potential, the bullet will stop and begin it's decent toward the source of the accelration(earth's gravity).
When a sniper shoots "high" he is accounting for the effects of the vertical gravity. but the horizontal velocity never changes until the bullet actually strikes something, and at that point the energy is transformed to heat, and fucking up it's victim.
but when homey blows his brains out, we don't have to consider it because we are looking at the horizontal component of the bullets motion.We could actually ignore the wind too because the magnitude of it's velocity is significantly less that that off the bullet.
If we shot the bullet straight up in the air,(remember we are ignoring the effects of friction, which eliminates airdrag) when it comes back down, at the height at which it was shot, it will have EXACTLY the same velocity as when it was fired.
There are two forms of energy in a frictionless problem such as this. Potential and Kinetic. If we considered friction, we would have to consider the energy lost in the form of Heat. Kinetic energy is transformed in to Potential as the bullet rises and gravity causes the bullet to accelerate 9.8m/s/s in the opposite direction. Once all of the energy becomes Potential, the bullet will stop and begin it's decent toward the source of the accelration(earth's gravity).
When a sniper shoots "high" he is accounting for the effects of the vertical gravity. but the horizontal velocity never changes until the bullet actually strikes something, and at that point the energy is transformed to heat, and fucking up it's victim.
but when homey blows his brains out, we don't have to consider it because we are looking at the horizontal component of the bullets motion.We could actually ignore the wind too because the magnitude of it's velocity is significantly less that that off the bullet.
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